I recommend reading the article if you have time (so does my wife). As she points out, it was a brave thing to do. It also makes a lot of sense for him to come clean this way as I am sure that he is hoping the book revenue will help him with the aforementioned debt issues.
As an aside, Megan has continued to dig into the story and has learned that there was more to it than was featured in the book or the article. This led to a back and forth between her and Edmund Andrews, our protagonist.